Can Anything Serious Happen in Cancun?

This time a year ago, passionate climate activists told us that we had just weeks left to save the planet. The looming Copenhagen climate change summit in December 2009 was, they claimed, our "last chance" to avert catastrophic global warming.

How things change. We are now just weeks ahead of this year's United Nations climate change summit in Cancun, Mexico, yet few people would be presumptuous enough to believe that the gathering will make any real difference to rising temperatures. Copenhagen's failure dashed hopes...